Paul mauser



UNITED STATES PATENT OFFICE.

PAUL MAUSER, OF OBERNDORF-ON-THE-NECKAR, VURTEMBERG, GERMANY, ASSIGNOR TO THE \VAFFENFABRIK MAUSER, OF SAME PLACE.

LOCK MECHANISM FOR GUNS.

SPECIFICATION forming part of Letters Patent No. 393,842, dated December 4, 1888.

Application filed May 5, 1887. Serial No. 237,185. (No model.)

To aZZ whom it may concern;

Be it known that I, PAUL MAUSER, of Oberndorf-on-the-Neckar, in the Kingdom of \Viirtembe'rg, Empire of Germany, have invented certain new and useful Improvements in the Looking Mechanism of Magazine Fire- Arms, of which the following-is a specification.

The invention relates to that class of magazine-guns known under the name Mauser, which are closed by a cylindrical breechpiece, and in which the cartridge-magazine is situated beneath and along the barrels.

The construction of different parts of the gun, except in regard to the present new invention, is covered by the United States Patents Nos. 270,599 and 289,113.

The object of this invention is to provide improved means for taking up the recoil and for securing the breech-chamber in its axial position when the arm is fired.

In the accompanying drawings, forming a part of this specification, the same letters of reference indicate corresponding parts.

Figure 1 is an axial and horizontal section of the lock-case 0. Figs. 2 and 3 are vertical cross-sections in the line A B of Fig. 1, the bolt ch being in the first instance in the vertical position and in the next instance in a horizontal or closed one. Fig. 4 is an end view of the case 0. Fig. 5 is a side view of the bolt ch, showing the recoil-shoulder2w.

To enable the bolt ch to better take up the recoil of the exploding cartridge and to keep it more correctly in its axial position than it has been possible by laying the guide-bar ch in closing the breech into the recess of the case 0 and pressing the back of the guide-bar ch against the recoil-face s f of the recess of the heretofore-constructed Mauser magazinegun, a second recoil take-up is made use of. \Vithin the case the ditiiculty was to find a place inside of the case 0 where the neces sary arrangements could be made, as the case 0 is already occupied in its front portion by the opening for the carrier 1), and the recesses for the movements in the guide-bar ch in the back portion by the groove 12s for the nose of the small lock, (the latter is not shown in the drawings), and the recess for the sliding block of the repeating mechanism, and in its whole length by the groove Z for the extractor 0 or the expellerj, as the case may be, and by the opening for the reciprocating movement of the guide-bar 071 The guide-bar ch has a handle, as shown. The metal of the case 0 remaining between the groove Z and the groove 113,1 use to constitute, in combination with a shoulder, zur, provided upon the bolt ch at its back end, a second recoil take-up. For this purpose there is milled inside of the case 0 a longitudinal groove, etc, which allows the bolt ch, with its shoulderzw, to be shoved completely into the case 0, Fig. 2. Further inward in the metal of the case 0 is milled an annular groove, 210 which registers with 210, and is in such position that the bolt ch can be thrown over to the right, Fig. into the recess of the case 0, when the shoulder 210 will slide through the groove .210 and in front of the metal left standing between the grooves as and Z, forming with this abutment here a second recoil take-up. Thus I produce a recoil take-up in the interior of the case besides the take-up us on the side of the case formed at the end of the slot.

As the two recoil take-ups form in radial direction an obtuse angle with each other that is to say, are or about diametrically opposite sides of the case c-the axial position of the bolt ch is maintained thereby in the moment ofthe explosion of the cartridge very effectually, so that the accuracy of a gun provided with this improvement is much greater than that of the same gun without it.

I know thatrecoil take-ups of different constructions are known and used on other guns than those called Mauser; but, as far as I know, a second recoil take-up of any construction was never used on Mauser guns, nor was the precise identical construction described above used or known at all.

I therefore claim my invention 1. In a gun, the case 0, having the internal parallel longitudinal grooves Z and 92.9, leaving between them a metal projection, the longitudinal groove .210, and the transverse groove .210 registering with the groove .210, in combination with the bolt 072 having the shoulder 510, that passes through the grooves 210 and 220 and in line with the said metal projection, substantially as shown and described, and for the purposes set forth.

2. In a gun, the combination of the case 0, having the parallel grooves Z and n5, forming between them a metal projection, longitudinal groove 2w, transverse groove .210 and shoulder sf, with the bolt ch, having shoulder 220, that comes in line with said metal projection, and guide-bar ch that comes in line i i i l l with the shoulder sf, all arranged for opera- Io tion substantially as herein shown and described, and for the purpose set forth.

This specification signed by me this 2ith day of March, 1887.

PAUL MAUSER. Vitnesses:

CARL T. BURCHARDT, KARL J ANEOKE. 

